Senior Software Engineer (5G PHY Layer)

Globalstar; San Diego (CA); On-site; USD 140,000 - 180,000; Full time

Job summary

Globalstar is seeking a Senior Software Engineer (L1/PHY) to design and implement real-time C/C++ software for high‑performing wireless systems in a fast-paced environment.

The role includes software development, testing, verification, and collaboration with design and test teams to validate 3GPP concepts, with emphasis on real-time performance and CI processes.

Qualifications

• BS Computer Science, Computer Engineering, or closely related field.
• 7+ years of hands-on software development experience with C and/or Modern C++.
• 5+ years of experience developing software for real-time Linux systems.
• 5+ years of experience with 5G or 4G L1 (PHY Layer) specs and stack development.

Responsibilities

• Design and implement real-time C/C++ software for high‑performing wireless systems.
• Participate in and enhance software processes, including design reviews, code reviews, and continuous integration.
• Collaborate with systems design and test teams to integrate and validate 3GPP wireless concepts.
• Additional duties as required by supervisor.

Skills

C/C++

Real-time Linux

L1 PHY/5G-4G

Education

BS Computer Science / Computer Engineering

Tools

Intel ecosystem: AVX-512, NIC drivers, DPDK

Job description

Responsibilities

As a Senior Software Engineer (L1/PHY), you will design and implement real‑time C/C++ software for high‑performing wireless systems. This includes designing, developing, coding, testing, and verifying major system features. You will participate in and enhance software processes, including design reviews, code reviews, and continuous integration. Also, you will work with systems design and test teams to integrate and validate novel 3GPP wireless technology concepts.

Qualifications

• BS Computer Science, Computer Engineering, or closely related field
• 7+ years of recent and hands‑on software development experience with C and/or Modern C++
• 5+ years of experience developing software for real‑time Linux systems
• 5+ years of experience with 5g or 4g L1 (PHY Layer) specs and stack development

Bonus Skills

• MS Computer Science, Computer Engineering, or closely related field
• Experience with Intel ecosystem: CPU architecture (AVX‑512 instructions), NIC drivers, and DPDK (Data Plane Development Kit)
• Knowledge of digital signal processing. Linear algebra would be a plus.
• Networking concepts, protocol, and networking tools (Wireshark, tcpdump)
• Unit testing and end‑to‑end system integration testing
• Debugging techniques for real‑time software applications
• Optimizing software performance

Additional Responsibilities

A review of this job description may have omitted some of the marginal functions of the position that are incidental to the performance of the job duties and responsibilities. This job description, in no way, states or implies that these are the only duties and/or responsibilities to be performed by the employee in this position. The employee in this position will be required to follow any other job‑related instructions and to perform any other job‑related duties requested by his/her supervisor.

Skills and Competencies

• Excellent verbal and written communication skills, including the ability to interact clearly and concisely with all departments and levels of management
• Excellent organizational skills with attention‑to‑detail
• Ability to meet multiple deadlines in a fast‑paced environment
• Ability to effectively manage time and prioritize tasks
• Ability to act with integrity, professionalism, and confidentiality
• Proficiency with Microsoft Office
• Familiarity with NetSuite
• Strong problem‑solving skills, especially under time constraints
• Ability to identify and seek needed information

Equal Opportunity Employer

Equal Opportunity Employer/Protected Veterans/Individuals with Disabilities. This employer is required to notify all applicants of their rights pursuant to federal employment laws. For further information, please review the Know Your Rights notice from the Department of Labor.